<?php
if (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown")) {
	$ip = $_SERVER['REMOTE_ADDR'];
} elseif (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")) {
	$ip = getenv("HTTP_CLIENT_IP");
} elseif (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")) {
    $ip = getenv("HTTP_X_FORWARDED_FOR"); 
} elseif (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown")) {
    $ip = getenv("REMOTE_ADDR");
} else { 
    $ip = "unknown";
}
?>